Building a Pearl 2

flip69

Member
2019-12-11 3:39 pm
Thanks for the answers to my prior questions. Here is another one re chassis grounding on the Pearl 2 unit (not the PSU). On 6L6's build, there is a floating binding post on the back panel for the turntable ground. The grounds from the two boards are also connected there (orange wire and black wire in 6L6's photo). The binding post is then star grounded via another black wire to a connection point on the bottom of the chassis. My question is, what is the reason for the separate connection point on the bottom of the chassis? Rather than floating the binding post on the back panel and running the wire to the separate grounding point on the bottom of the chassis, why not just chassis ground everything at the binding post on the back panel and eliminate the connection point on the bottom of the chassis?
 
You get a surge in current charging up the electrolytic capacitors at "turn-on". This can be mitigated with a Amphenol Thermometrics "Inrush Current Limiter" -- when cold the resistance is high, limiting the charge current. As the ICL heats the resistance decreases. I think that some have used the CL-60 which is readily available at DK.
Thanks jackinnj for the advice, I already ordered a CL-60. Can you please help me with where in the schematics of the PS I need to add this part?
 
Hi, has onyone else here recently ordered Nelsons Pearl II boards to Germany?
How long did they got stuck at customs? And did you receive a letter for taxes,.. or were they directly delivered?
I´m asking, because mine are in Frankfurt for 2 weeks now..
Thanks
I also had a bad experience but in Romania not Germany, my bords got stuck in the customs for 3 weeks. Problem is despite the hefty 40 USD delivery charge to Europe the guys at Passdy used USPS which is the standard mail service in the US and when enters another country need to be taken over by the standard mail service in that country and it gets slow in the customs. In your case it would be Deutsche Post.
 
I am advancing with my build. I followed the advice on this forum to start with the regulators part of the board to obtain 24V.
Today finished that part of the build for both boards and I measured:

Board 1: ground to R3 = 23.9 V
ground to R33 = 23.6 V

Board 2: ground to R3 = 23.9 V
ground to R33 = 23.9 V

I assume all is fine but it would be nice a confirmation from the experienced folks here.

One question: now to continue on the build I just solder all the remaining components or is there another step intermediate to follow and then measure certain voltages before continuing ?

Thanks!
 

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I also had a bad experience but in Romania not Germany, my bords got stuck in the customs for 3 weeks. Problem is despite the hefty 40 USD delivery charge to Europe the guys at Passdy used USPS which is the standard mail service in the US and when enters another country need to be taken over by the standard mail service in that country and it gets slow in the customs. In your case it would be Deutsche Post.
Also the USPS tracking - at least from my experience - stops at the customs - I could use their tracking number in the Romanian mail service to continue tracking the package. You will need to pay VAT.
 
Also the USPS tracking - at least from my experience - stops at the customs - I could use their tracking number in the Romanian mail service to continue tracking the package. You will need to pay VAT.
thanks for sharing your experience. DHL/ Deutsche Post is already aware of the parcel ,I can find it in the tracking System,but I'm waiting for customs clearance and want to avoid the Boards to be returned to the US. and yes, the 40$ are hefty, especially if it takes 3weeks to leave the the US..
Lets hope the Best..